Tire-mold.



-W. A. HOBBINS.

TIRE MOLD. APPLICATION FILED IAN.23, I9l5.

Patented May 30,1916.

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' Specication f Letters Patent.

Patented May 30,191.6.

Application led anuary 23, 1915. Serial No. 3,853.

To ai! whom tmay concern:

)Be it known that I, WILLIAM A. Ronvs, a citizen of the United` States, residing in GlenRidge, in the county ofEsseX and State of New Jersey, have invented certainnew and usefullmprovements in TireMolds, of which the followiii" is a specification. I This invention' ratesto the general art of vulcanizing tires..

f The mam object of this invention is to provide a mold for tires to be vulcanized which will possess the advantages obtained .by the well known wrapping method used Yin the vulcanization of tires, and bymeans of .which new mold,.the tire can be quickly and entail the laborious ,task which is necessary ywith the old wrapping method.' To this end, a mold is provided comprising av core on which the tire is positioned, two complemen-4 tal fabric diaphragm members disposed on eachide of the outer portion of the tire,

two annular metalv members .securing bev tween them the two outer ends of the fabric lat the tread portion of the tire, and annular members securing the inner ends of the fabric at the'clencher edgesof the tire, such anfnular membersv holding said fabric under tension about theoutersides of the tire, and so which mold is -intended to be ,disposed in a vulcanlzer contaming either steam under pressure or hot water under pressure where the vulcanizing process ensues.

, Other objects of the invention are to provide a tire mold containing few parts, that can quickly and readily be assembled and can be manufactured at low cost.

These' and other features, capabilitiesand advantages of the invention`will appear from the subjoined detailed description of one' specific embodiment thereof illustrated in the accompanying drawings in which- Figure l is an elevation of the m'old. complete. Fig. 2 is a cross section on the line 2-.2 of Fig. v1. Fig. 3 is a fragmental view in cross section on the line 3-3 of Fig. 1.

In the embodiment illustrated, an annular .Lepre member 10 is rovided having a head .6o portion 12 extending inwardly from said f portion llconforming to the inner periph-- ery of the tire T to'be vulcanized, and a neck head, in whichv neck portion 12, there are 3 formed bolt openings 13 suitably spaced portions of the vmela and are which face the lmagiuary-axial line of the complete mold will be .designated as the inner laterall sides,

and thoseportions Vwhich face away ,from

such imaginary axial 'line in a'lateral directov right hand l'side of Fig. 2, will be designated as the right sides and those portions which are disposed on and face the left hand side of F1 2 will be .designated as the left sides,

and t ose portions approaching or facing the imaginary line dividing the right from the left side of the mold, will be called the inner circumferential portions or faces respectively, and those portions remote'from or facing will be called the outer circumferential portions or faces respectively.l l

On each side of the neck' portion 12, there away from such imaginary line" is provided an annular bead clamping mem A ber 15 having an inner surface 16 conforming to the bead 17 of the tire T, an extension I 18 disposed to rest against the neck ortion 12 of the core 10 and an annular shou der 19 on the inner edge of such extension 18. The free edges of the extensions 18 abut against the lateral faces of the neck portion 12 while the annular shoulder` portions 19 engage the inner face of such neck portion 12. The otherside of each of such annular members 15 is substantially plane. Through such annular members at various points along the same, there are provided certain bolt openings 20 (Fig. 2) which pass entirely through the extensionsv 18, and screw openings 31 (Fig;. 3).

On the right side of the right annular member 15 and on the left side of the left annular member 15, there are disposed outer longitudinal annularmembers 22 each'adjacent to one vof the substantially lane sides 23 of such annular members 15. lilach of such annular members 22 has at its inner lateral end an annular flange 24 to rest against'the inner end of the substantially plane side 23 of its adjacent annular member 15 forming an annular space 25 between the lateral outwardly extending portion of such annular member 22 and the annular member l15. The

outer lateral annular edge of each annular member 22 extends `outwardly beyond the outer lateral edge of its adjacent annular member 1'5 and is bent in thesame direction wardly curved iiange 26.'

as its flange 24 to form a circumferential in` nular members V29 and 30 respectivelyl Outwardly of the flange 24, and in alinement with the bolt openings vin 22, there are provided boltl openings 27 (Fig. 2) in each annular memberA 22, and in alinement with lthe screwopenings 21 and outwardly in a lateral direction of the flange 24, there are provided vscrew openings 28 Fig. 3) in each annular member 22.

Disposed adjacent tothe tread portion of the tire T, there are provided two complemental annular members 29 and 30V having annular ribs 31 and 32respectively extend* ing outwardly in a lateral direction therefrom, the rib 31 being disposed ladjacent to the left side ofl the annular member 29, andv the rib 32 beingdisposed adjacent to the right side of the annular member 30.

When the annular members 29 and. 30 are 'in mold forming position, the outer longitudinal annular rabbets 33 and 34 of the anformed bythe ribs 31 and 32 face one another and togetherl form a chamber. v

.In'the use of the device, there are-two distinct partsof the mold, namely, the core 10 on which the tire T is built-up, and a covering member is composed of any suitber comprises two complemental port-ions,

able liexibletinaterial such as canvas, rubberized cloth or the like to be drawn up over such built-up tire. The covering memone embracing-the outer lateral .annular member 29, in the rabbet-33 of which the` hook p ortion 35 of adiaphragm member 36 is disposed, which diaphragm-member covers one-half of the built-up tire and has an inner -lateral annular portion 3 7 with an inner portion 38, disposed in the corner formed between the tire T and the outer side 39 -of the annular member 15, resting on such side 39, and has fextending there-v A from another portion 40 which is first bent .around at .4l and then extends in to be secured between the left annular member 22 and the left annular member 15. Similarly, the yother complemental portion embraces the outer annular member 30 in the outer annular rabbet 34 ofwhich the hook portion 42 of the diaphragm member engages, and which diaphragm member covers 4the other half of lthe vbuilt-up tire. and has an inner lateral annular portion 44 with an inner portion 45' which is disposed in thef corner formed'between thev tire'T andthe outer lateral side 46 o the inner annular member 15, resting on such side 46, and has .extending therefrom another `'portion 47 which is first bent around at 48 and thenextends in to be secured between the right outer annular member 22 and the rightA inner annular member 15.

i 42 and part 'of .the hook portion 35, .and

across the meeting edge of the two hook portions, there is provided an annular plate 50 which is secured to the rib' 32 of the annular l member 30.

For clamping the eomplemental portions together, there .are provided long bolts 14 which pass' throughl the bolt openings 27 in" oneannular member 22, through the bolt openings 20. in` its adjacent inner'annular member 15, then through the bolt openings 13 inthe neokportion 12, then through the bolt openings-20inthe other longitudinal y inner annular member l5, and through the' y .arepassed' through the openings'23 in each outer annular .member 22 and arevthreaded into the screw openings 21 1n itsadgaoent inner annular member 15, ,whereby each -c omplemental diaphragm' portion may be secured between two inner lateral annular members vindependently ofthe other complemental` diaphragm portion.

For clamping the two outerlateral anl nular'mer'nbersv29 and 30 securely against the hook-portions 35 and 42, there is provided a plurality of recesses54 in the annular member 29 in alinement with a plurality of recesses 55 in the annular member 30, which recesses are disposed along the outer longitudinal faces respectively of the Y annular members 29 yand 3Q .in which alined recesses, the fingers 56 andA 57 of the clamps C engage. Each clamphas a vfinger'56 and a finger57, suchl finger 56'being pivotally vconnected to the longitudinally extendingv portion 58 of the finger 57. There are provided orifices .in the fingers 56 and 57 which are in alinement with one'anoth'erwhen the fingers arev in 'clamping position, through which orifices passes a clamping rod .59 having a head 60 disposed on the outer longitudinal side of the finger 57 and `being pivu otally connected-to the cam .lever 61 on the outer longitudinal side of the other finger 56, which'lever 61 has a cam 62 disposed to engage the outer longitudinal face of the finger 56 and to press the finger 56 toward the finger 57 into clamping position when the lever 6L is swung into position. Therel are provided a plurality of these clamps C positioned all along the periphery of the mold. as shown in Fig. 1.

It is obvious that various changes and.v

modifications may be made to the details of construction without departing from theg general spirit of the invention. I claim: y f

l. A mold for tires to be vulcanized comprising a sore on which the tire to betreated is positioned2 two c'omplemental diaphragm members positioned around said tire, clamping means clamping the outer adjacent edges of said diaphragms together at the tread portion of said tire, said outer clamping means comprisingv two complemental and inner clampin means clamping the inner edges of said iaphragms in position at the clencher edges of said tire, said clamping means being removed from the main body of the diaphragm meansto permit the` ready access ofl the vulcanizing material` to said diaphragm means and prevent the condensation of the same before it reaches such diaphragm means.

2. A'mold for tires to :be vulcanizeducomprising an annular core member having a the neck oi't said core member, outer annu- I neck portion, and a head on whichthe tire to be treated is positioned, diaphrag'm means positioned around said tire, clamping means clamping the free edges of said diaphragm `means imposition at the clencher edges ofv said tire, said clamping means comprising inner annular members disposed adjacent to lar members, between which inner and outer annular members the vfree edges of said diaphragm means are secured, and binding screws passing through said inner and-outer annular members and said neck portion to draw said clamping means `together adjacent to said neck portion and thereby draw said diaphragm meansO tautly around the tire to be treated.;`

3. A mold for tires to be vulcanizedcomprising is positioned, diaphragm meanspositioned around said tire, clamping means clamping llateraly faces of said outer laterizi an and an annular plate secured to one oi:

a core on which the tire to be treated the outer- `free edges of said diaphragm Imeans in position at the tread portion'of said tire, said clamping means comprising two outer lateralannularmenibers between which the f ree edges of said diaphragm means are disposed, clamps clamping said outer lateral members together, there being recessesin the lateral outer faces of said outer annular members, said clamps compris- -ing lingers which engage in said recesses, one

of said fingers having a longitudinally extending portion to which the other finger is pivotally connected, there being orifices Vthrough said fingers in alinement with onel another when the fingers are'in clamping position, a clamping rod passing through said orifices, and a cam lever pivotally connected' to one end 'of said clamping rod and disposed for clamping said fingers together when swung into position, p

4. A mold for tires to be vulcanized comprising two distinct membersconsisting of a core member-'having a neck portion, and a head on which the tire to be treated is builtup, and a covering member comprising two complemental portions, each embracing a diaphragm member to be positioned around part of said tire, outer lateral annular members for clamping the outer lateral free edges' of said dia igm together, annular ribs adjacent to me outer -circumferential edges of said laterai annular members along the outer lateral faces thereA of, hook portions on the outer edges said diaphragm members disposed on. the enter 'hay members longitudinally inward of ribs and extending over the meeting edges of said hook portions.

WILLIAM A. RoBBiNs.

Witnesses: i

GUsTAv DREws, H. D. PENNEY. 

